John Patrick Yob, CEO of Strategic National Consulting, a political consulting firm hired by independent candidate and Massachusetts Treasurer Tim Cahill's campaign in March, said in a statement that Loscocco will endorse Baker at a press availability later today.

Immediately after, the Baker campaign announced an event at 11 a.m. at Baker/Tisei headquarters in Boston, at which baker, Loscocco and Baker's running mate Richard Tisei will speak.

"I cannot sit idly by as my friends and supporters cast their votes for my ticket, knowing that the best chance to defeat Governor Patrick is with Charlie Baker," Loscocco said in a prepared statement. "I cannot and will not let my ego get in the way of doing what is right for Massachusetts. So while this is a tough decision for me today personally, it is the right decision to put the future of our state ahead of my own self-interest."

"I think [Cahill] would be a great governor, but you have to look at the facts,” Weaver told the Associated Press. “It’s just recognizing the reality that it’s just not going to happen for Tim and continuing on would have only help Patrick and hurt Baker."

In the most recent governor's race poll, conducted by the University of New Hampshire Survey Center for The Boston Globe, Baker and incumbent Governor Deval Patrick, a Democrat, were in a statistical tie. Thirty five percent of likely voters favored Patrick compared to 34 percent for Baker, well within the poll's margin of error of plus or minus 4.3 percentage points.

Cahill and Loscocco had earlier qualified to be on the November ballot, which means the two will appear as a ticket, though Loscocco will not be campaigning with Cahill before the election.

Massachusetts Democratic Party Chair John Walsh said today that Loscocco's Baker endorsement "reeks of the kind of raw political scheming that voters are angry about."

"Voters should also be asking what Mr. Loscocco is getting in return from the Baker campaign,” he said.

Meanwhile, Nick Ayers, executive director of the Republican Governor's Association, suggested on Twitter that Cahill's decision to remain in the race, despite losing several key members of his campaign, means that he has struck a deal with Gov. Patrick.